At least Thyssen Krupp fucked it up themselves with a botched invest in (south)american factories, where they lost more than their current market value. And thats symptomatic for the current situation if you ask me, most of these companies were greedy and stupid and now the past comes due.
Except for the csgo gambling I have no complaints about Gabe and he really does a lot of good stuff with valve, so he really might be one of the better billionaires.